Ozzy Osbourne’s addictions are the stuff of rock 'n; roll legend, but it’s his progeny, Kelly Osbourne, who is the apotheosis of the addictive personality. After her turn as an angsty teenager on her family’s MTV reality series, the Osbourne offspring developed drug addictions and succumbed to emotional binge eating. The rock royalty was in and out of rehab, but what really saved her was another reality show, Dancing With the Stars. The exercise regimen set her on a path toward healthy living, which ultimately helped her lose 42 pounds. Now a size 2, Osbourne recently appeared on the cover of Shape magazine in a bikini, which brought tears of happiness to her eyes. “It was a bit of an emotional roller coaster because I never thought that would be me or I'd ever look like that,” she explained. The now-25-year-old reality star works with Blue Clay Fitness (which includes five days of cardio and strength training) and sticks to a diet of vegetables and fish. "She curses me at the gym," her personal trainer told People magazine, "and thanks me when she's getting dressed."